Below is every ingredient in Sereko 24H Hydration Sunscreen Spf 50 Pa With Cica Uva Uvb And Bluelight Protection explained, its standout actives, and the side effects reported in research for those actives — analysed for Indian skin.
Flags derived from the ingredient list using dermatology reference data (fungal-acne substrate, comedogenicity, EU allergens). General guidance, not a diagnosis.
Answers are derived from the printed ingredient list and dermatology reference data — general guidance, not a diagnosis or a therapeutic claim.
Bis-Ethylhexyloxyphenol Methoxyphenyl Triazine (also known as Bemotrizinol or Tinosorb S) is a broad-spectrum organic UV filter that absorbs both UVA and UVB radiation. It is highly photostable and is commonly used in sunscreens and daytime skincare products to provide photoprotection.
Methylene Bis-Benzotriazolyl Tetramethylbutylphenol (also known as Bisoctrizole or Tinosorb M) is an organic-particulate UV filter that provides broad-spectrum protection across both UVA and UVB ranges by absorbing and scattering UV radiation. It is photostable and commonly used in sunscreens, often paired with other filters.
Centella Asiatica Extract is a plant-derived ingredient rich in triterpenoids (asiaticoside, madecassoside, asiatic and madecassic acids) used to calm inflammation, support wound healing, and strengthen the skin barrier. It is also valued for antioxidant and collagen-supporting properties in topical formulations.
Diethylamino Hydroxybenzoyl Hexyl Benzoate (also known as Uvinul A Plus) is an oil-soluble organic UV filter that absorbs primarily in the long-wave UVA range (around 354 nm), helping protect skin from UVA-induced damage. It is photostable and commonly combined with other filters in broad-spectrum sunscreens.
Allantoin is a naturally derived or synthetically produced compound used in skincare for its soothing, moisturizing, and keratolytic (skin-softening) properties. It promotes cell proliferation and helps calm irritation, commonly appearing in creams, lotions, and after-sun products.
Tocopherol (vitamin E) is a lipid-soluble antioxidant used in skincare to protect skin and formulations from oxidative damage caused by free radicals and UV exposure. It also functions as a skin-conditioning and emollient agent and can stabilize oils against rancidity.
Aggregated from the active ingredients in this product.
| Reported effect | How often | Notes |
|---|---|---|
| Skin irritation or sensitivity | Very rare | Purified water is essentially inert; reactions are attributable to other formula components, not the water itself. |
| Transient skin barrier disruption from excessive exposure | Rare | Prolonged or repeated wetting can contribute to mild barrier compromise, but this relates to usage patterns rather than the ingredient. |
| Mild skin irritation | Uncommon | Transient stinging or redness, more likely on compromised or sensitive skin. |
| Allergic contact dermatitis | Rare | Sensitization is infrequent; propanediol is generally considered low-risk for allergy. |
| Enhanced penetration of co-formulated irritants | Uncommon | As a penetration enhancer it may increase absorption and irritation potential of other actives. |
| Skin irritation | Rare | Generally well tolerated; mild irritation possible in sensitive individuals. |
| Comedogenicity / breakouts | Uncommon | Low comedogenic potential but may contribute to clogged pores in acne-prone skin. |
| Contact urticaria | Very rare | Isolated reports of hive-like reactions tied to benzoate moiety. |
| Mild transient stinging or irritation | Uncommon | More likely at high concentrations or on compromised/broken skin. |
| Tacky or sticky skin feel | Common | A cosmetic sensation rather than an adverse reaction, more noticeable at higher concentrations. |
| Contact dermatitis or allergic reaction | Rare | True allergy to glycerin is uncommon; patch-test positivity is infrequent. |
| Skin dehydration in very low humidity | Rare | In very dry environments humectants may draw water from deeper skin layers if not paired with an occlusive. |
| Contact dermatitis / skin irritation | Rare | Occasional reports of mild irritation or redness in sensitive individuals. |
| Allergic contact dermatitis / sensitization | Very rare | Considered to have low allergenic potential; documented cases are uncommon. |
| Stinging or eye irritation | Rare | May occur if product migrates into the eyes, generally formulation-related. |
Frequencies reflect typical cosmetic use reported in the literature, not a guarantee for your skin.
| Ingredient | What it does |
|---|---|
| Purified Water Solvent/vehicle | Purified water is a highly filtered, deionized water used as the primary solvent and base in most skincare formulations. It dissolves water-soluble ingredients and provides the medium in which other components are dispersed. |
| Propanediol Humectant/solvent | Propanediol is a plant-derived glycol used in skincare as a humectant, solvent, and penetration enhancer that improves moisturization and the spreadability of formulations. It also helps solubilize other ingredients and can boost the efficacy of certain actives. |
| C12-15 Alkyl Benzoate Emollient / texture enhancer | C12-15 Alkyl Benzoate is a lightweight ester emollient widely used in skincare and cosmetics to improve spreadability, provide a smooth non-greasy skin feel, and act as a solvent and mild antimicrobial booster. It is considered a base/formulation ingredient rather than a treatment active. |
| Glycerin Humectant | Glycerin is a widely used humectant that attracts and retains water in the skin, helping to hydrate the stratum corneum and support barrier function. It is considered safe and well-tolerated across most skin types and concentrations. |
| Bis-Ethylhexyloxyphenol Methoxyphenyl Triazine Key active UV filter (sunscreen) | Bis-Ethylhexyloxyphenol Methoxyphenyl Triazine (also known as Bemotrizinol or Tinosorb S) is a broad-spectrum organic UV filter that absorbs both UVA and UVB radiation. It is highly photostable and is commonly used in sunscreens and daytime skincare products to provide photoprotection. |
| Methylene Bis-Benzotriazolyl Tetramethylbutylphenol Key active UV filter (broad-spectrum) | Methylene Bis-Benzotriazolyl Tetramethylbutylphenol (also known as Bisoctrizole or Tinosorb M) is an organic-particulate UV filter that provides broad-spectrum protection across both UVA and UVB ranges by absorbing and scattering UV radiation. It is photostable and commonly used in sunscreens, often paired with other filters. |
| Centella Asiatica Extract Key active Soothing/antioxidant active | Centella Asiatica Extract is a plant-derived ingredient rich in triterpenoids (asiaticoside, madecassoside, asiatic and madecassic acids) used to calm inflammation, support wound healing, and strengthen the skin barrier. It is also valued for antioxidant and collagen-supporting properties in topical formulations. |
| Lecithin Emollient / Emulsifier | Lecithin is a naturally occurring phospholipid (commonly derived from soybean or egg) used in skincare as an emulsifier, emollient, and penetration enhancer. It helps stabilize oil-and-water formulations and supports the skin barrier by mimicking natural lipids. |
| Sodium Acrylates Copolymer Thickener / film-forming stabilizer | Sodium Acrylates Copolymer is a synthetic anionic polymer used to thicken, stabilize, and improve the texture of cosmetic formulations, often forming a smooth film on the skin. It functions primarily as a rheology modifier and emulsion stabilizer rather than a treatment active. |
| Cellulose Thickener / absorbent / texturizer | Cellulose is a plant-derived polysaccharide used in skincare as a thickening, stabilizing, and absorbent agent, and in exfoliant or film-forming roles. It is generally inert and well tolerated as a formulation base ingredient. |
| Diethylamino Hydroxybenzoyl Hexyl Benzoate Key active UVA filter (sunscreen) | Diethylamino Hydroxybenzoyl Hexyl Benzoate (also known as Uvinul A Plus) is an oil-soluble organic UV filter that absorbs primarily in the long-wave UVA range (around 354 nm), helping protect skin from UVA-induced damage. It is photostable and commonly combined with other filters in broad-spectrum sunscreens. |
| Ethylhexylglycerin Preservative booster / skin-conditioning agent | Ethylhexylglycerin is a multifunctional glyceryl ether used in cosmetics primarily as a preservative-enhancing agent and emollient, often paired with phenoxyethanol to broaden antimicrobial efficacy. It also acts as a deodorizing agent and humectant in skincare formulations. |
| Phenoxyethanol Preservative | Phenoxyethanol is a widely used broad-spectrum preservative that protects cosmetic and skincare formulations from bacterial and fungal contamination. It is typically used at concentrations up to 1% and serves as a formulation/base ingredient rather than an active treatment. |
| Sodium Polyacrylate Thickener / absorbent | Sodium polyacrylate is a superabsorbent acrylic-acid polymer used in skincare as a thickening, stabilizing, and water-binding agent that can hold large amounts of liquid to create gel-like textures. It functions as a formulation and texture-enhancing ingredient rather than a biologically active treatment. |
| Pentylene Glycol Humectant / solvent / preservative-booster | Pentylene glycol is a glycol used in cosmetics as a humectant and solvent that also enhances the antimicrobial efficacy of formulations, helping reduce reliance on traditional preservatives. It improves skin hydration and aids the delivery and stability of other ingredients. |
| Sodium Hyaluronate Humectant / hydrator | Sodium hyaluronate is the sodium salt of hyaluronic acid, a glycosaminoglycan that attracts and binds water to the skin to improve hydration and surface plumpness. Its lower molecular weight allows better penetration than native hyaluronic acid. |
| Allantoin Key active Soothing/skin-conditioning agent | Allantoin is a naturally derived or synthetically produced compound used in skincare for its soothing, moisturizing, and keratolytic (skin-softening) properties. It promotes cell proliferation and helps calm irritation, commonly appearing in creams, lotions, and after-sun products. |
| Aloe Barbadensis Leaf Extract Soothing/moisturizing agent | Aloe Barbadensis Leaf Extract is derived from the aloe vera plant and is used in skincare for its hydrating, soothing, and mild anti-inflammatory properties. It is commonly included as a supportive base ingredient rather than a primary treatment active. |
| Citric Acid pH adjuster / AHA exfoliant | Citric acid is an alpha-hydroxy acid derived from citrus fruits, used primarily to adjust and buffer formulation pH and as a chelating agent, and at higher concentrations as a mild chemical exfoliant. It can promote surface cell turnover and is sometimes included in antioxidant or brightening products. |
| Sodium Gluconate Chelating agent / skin-conditioning | Sodium gluconate is the sodium salt of gluconic acid used in skincare primarily as a chelating agent to bind metal ions and stabilize formulations, with secondary humectant and skin-conditioning properties. It is generally considered a base/formulation ingredient rather than an active treatment. |
| Sodium Hydroxide pH adjuster | Sodium hydroxide (lye) is a strong alkaline compound used in small amounts to adjust and stabilize the pH of cosmetic formulations. At regulated low concentrations in finished products it is considered safe, though it is corrosive in concentrated form. |
| Tocopherol Key active Antioxidant | Tocopherol (vitamin E) is a lipid-soluble antioxidant used in skincare to protect skin and formulations from oxidative damage caused by free radicals and UV exposure. It also functions as a skin-conditioning and emollient agent and can stabilize oils against rancidity. |
| Glucose Humectant/skin-conditioning agent | Glucose is a simple sugar used in skincare primarily as a humectant and skin-conditioning ingredient, helping to attract and retain moisture in the skin. It can also serve as a substrate in formulations and contributes to the skin's natural moisturizing factors. |
| Sodium Lactate Humectant / NMF component | Sodium lactate is the sodium salt of lactic acid and a key component of skin's natural moisturizing factor (NMF), used to hydrate the skin and buffer formulation pH. It also has mild exfoliating and humectant properties that help maintain skin moisture and barrier function. |
| Trehalose Humectant / moisturizer | Trehalose is a naturally occurring disaccharide used in skincare as a humectant and protective agent, helping retain moisture and stabilize cell membranes and proteins against dehydration and oxidative stress. It is well tolerated and commonly used to support skin barrier hydration. |
| Fructose Humectant | Fructose is a simple monosaccharide sugar used in skincare primarily as a humectant that attracts and binds water to help maintain skin hydration. It is generally considered a supporting/base ingredient rather than a therapeutic active. |
| Maltose Humectant / skin-conditioning agent | Maltose is a disaccharide sugar used in skincare primarily as a humectant and skin-conditioning agent, helping to attract and retain moisture in the stratum corneum. It is generally considered a low-risk, well-tolerated formulation ingredient rather than a therapeutic active. |
| Sodium Chloride Thickener / viscosity adjuster | Sodium chloride (table salt) is commonly used in cosmetics as a thickening and viscosity-control agent, particularly in surfactant-based cleansers, and also acts as a mild abrasive in scrubs. It is generally well tolerated and considered a formulation ingredient rather than a treatment active. |
| Sodium PCA Humectant | Sodium PCA (sodium pyrrolidone carboxylic acid) is the sodium salt of pyroglutamic acid and a component of the skin's natural moisturizing factor (NMF). It is widely used in cosmetics as a water-binding humectant to hydrate and soften the skin. |
| Urea Key active Humectant / keratolytic | Urea is a naturally occurring component of the skin's natural moisturizing factor that hydrates by attracting and retaining water; at higher concentrations it also softens and exfoliates thickened or scaly skin. It is widely used to treat dry skin conditions such as xerosis, ichthyosis, and hyperkeratosis. |
| Baptisia Tinctoria Root Extract Key active Skin-conditioning / soothing botanical extract | Baptisia Tinctoria Root Extract is derived from the wild indigo plant and is used in skincare primarily for its purported soothing, immunomodulatory, and wound-supportive properties. It is sometimes included for its traditional antimicrobial and skin-conditioning reputation. |
| Ocimum Basilicum Oil Fragrance/antimicrobial | Ocimum Basilicum Oil is the essential oil derived from basil (Ocimum basilicum), used in skincare primarily as a fragrance, aromatic component, and for purported antimicrobial and antioxidant properties. It contains volatile constituents such as linalool, estragole (methyl chavicol), and eugenol. |
Key active = does the main work. Ingredient explanations are drawn from public databases & literature.
Peer-reviewed papers on the active ingredients in this product, via PubMed.